If and , calculate…

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

If

\cos\theta=-\dfrac{7}{25}

and

180^{\circ}<\theta<270^{\circ}

, calculate

\csc\theta

. (a)

\dfrac{25}{24}

(b)

-\dfrac{25}{7}

(c)

-\dfrac{25}{24}

(d)

-\dfrac{24}{25}

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